You have had a lot of great opportunities & made the most of them- congratulations! Your challenges, as I am sure that you know are that 1) you need a lot of financial aid and 2) only about 15% of the 8% of applicants that Columbia accepts will be international students (the range is 8-15% across US colleges).
Your financial aid situation could be somewhat complicated, as you indicate that your parents are willing / able to spend 15+% of their gross income on your college experience. My guess is that they are on some sort of expat package. Have you tried any NPCs?
There are schools (such as Colgate) that are need-aware for international students but that will meet full need if they accept you. Colleges that provide merit aid will be trading your high stats for their financial aid, so will typically not be the kind of brand name you are looking for.